E.g. I released some ports to change my Nat type on the Ps4 from 2 to 1, can that be dangerous? I just wanted a more stable connection, as I find parties very difficult at times and it sometimes does not jerk, but I would also easily manage with a LAN connection if it could be dangerous. I would only be interested.
What exactly should be dangerous?
In theory, opening ports yourself can be dangerous. But not necessarily for the normal end user. It can happen that you open the ports manually, that they remain open and do not close. This means that anyone who knows your IP address via this port, who must also be known, can usually inject data into your system unhindered and hidden.
But as I said, rather unrealistic for the end user or less of a danger.
